Fiance messaged a girl for a drink?

I think he is getting bored with your relationship and this Crystal sounds like a bit of a tart. I mean going out in a bra? Seriously. I dont think she is interested in him though so hes made him self look stupid. I think you should sit down and talk about your relationship and if he still doesnt want to resolve things dump his ***! I mean who wants to go out with a guy called frank anyway!